I can see that there have been some talk about the "Warning: Missing l10n for button" but since I don't understand the German language that much, I might post the same here in English, since I don't know it you already figured this out.

After the Patch 2.0 Final was released, I really didn't have any problems with this but the other day, I started to get a starting log like this:

I thought this was a bit funny, since I knew that all those mods I have installed (except for 2) do have all the l10n strings for the buttons.Then I started to dig further down into it and then I realized that when changing a inputBinding key in the game and the inputBinding.xml was saved with all the mod key settings, this started to happen.

Again I took an extra look at the log and I then realized that the inputBinding.xml button setup was loaded before the actually mods was loaded, which is why it can't find the l10n strings for those buttons.

I'm guessing this is a bug in the patch 2.0.0.9 release which I hope will get fixed, so I don't have to go into each mods and change the key settings manually instead of doing it ingame.

Kind regardsSatis

All of this goes away again, if I go ingame and reset to standard key setup, since it will remove all the mod inputBindings from the inputBinding.xml and they are loaded on the fly with the mods.